list of posts

hi everybody,

I want a list of all posts of my blog in this page:

http://trancebrothers.vacau.com/2012/09/

But, I don’t know why, it only shows in this page 4 posts per page. I want the all posts of blog by to the of page.

It is possible??

Probably is in the code but I do not understand it.

Please help me!!

Thanks a lot!!